<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
<script type="text/javascript" src="js/demo.js"></script>

</head>
	<body>
	  <input type="text" id="sonText">
	  <button id="sonBtn">确定</button>
	</body>
	
	<script type="text/javascript">
	    $("#sonBtn").click(function(){
	        var $val = $("#sonText").val();
	        $("#parentText", window.parent.document).val($val);//jQuery写法给父页面传值
	        //window.parent.document.getElementById("parent").setAttribute("value",$val);//原生javascript写法给父页面传值
	        $(".clear", window.parent.document).hide();//jQuery写法控制父页面中的某个元素隐藏
	        //window.parent.document.getElementsByClassName("clear")[0].style.display = "none";//原生javascript写法控制父页面中的某个元素隐藏
	    })
	</script>
</html>